Change to y = mx + b format
X - y = 16
-y = -x + 16
So slope = - 1 / 1
The given point is (3,-2).
The transformation is a vertical stretch of 4.
Vertical stretch can be obtained when we multiply the vertical coordinate by a factor, in this case, 4.
<h2>Therefore, the right answer is D.</h2>
-3x^2 + 12x -6
a = -3
b = 12
We calculate the vertex "x" value with this formula:
(vertex "x value") = -b / (2*a)
(vertex "x value") = -12 / -6
The vertex "x" value equals the axis of symmetry value.
The axis of symmetry is at x = 2.
Source:
http://www.1728.org/quadr3.htm